US1552018A - Driving and stopping mechanism - Google Patents

Description

Sept. 1, 192's. 1,552,018

L. E; TOPHAM muvms' AND STOPPING macrmmsu ed April 9, 191'! s Sheets-Sheet 1 ITDVETUt/CJT'" L E. TOPHAM DRIVING AND STOPPING MECHANISM Ori inal Filed April 9 7 6 Sheets-Sheet 2 Sept. 1, 1925.

L. E; TQPH'AM DRIVINGAND STOPPING HECHANIS I' e sheets sneet a l'nventov Sept 1, 1925. 1,552,018

L. E. TOPHAM I DRIVING AND STOPPJNG MECHANISM 011mm Filed April 9, 1917 6 Sheets-Shet 4 Z Z #5775 55 rvvez tar Sept. 1, 1925.-

L. E. TOPHAM DRIVING AND STOPPING MECHANISM Original Filed April 9, 1917 6 Sheets-Sheet 5 Patented Sept. 1, 1925.

UNITED :STATES' LAURENCE E. TOPHAM, or swnivrrscorr MASSACHUSETTS, ASSIGNO'R To UNITED SHOE MACHINERY CORPORATION, OF IPATER SON, NEW JERSEY, A CORPORATION'OF NEW JERSEY.

DRIVING AND STOPPING MECHANISM.

Original application filed April 9, 1917, Serial No. 160,751. Divided. and this application filed January 17,

1920. Serial No. 352,069.

To all whom it may concern:

Be it known that I, LAURENCE E. TOPHAM, a citizen of the United States, residing at Swampscott, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Driving and Stopping Mechanisms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The presentinvention relates to driving and stopping mechanisms, and more particularly to driving and stopping mechanisms adapted for use in high-speed machines.

The objects of the invention are to improve the construction and mode of operation of driving and stopping mechanisms. and to produce a novel and improved mechanism which will act in a uniform and reliable manner to bring the parts of the machine to rest at a predetermined point in a cycle of operations without undue shock, jar or vibration, and without subjecting the parts to excessive strain.

The invention as illustrated in the present application is embodied in a driving and stopping mechanism comprising high speed driving mechanism for the driven shaft and low speed driving mechanism which is thrown into operation just before the shaft is to be stopped, and an important feature of the invention consists in the provision of mechanism arranged to operate during any rotation of the driven shaft for disconnecting the high speed driving mechanism from the shaft and for connecting the low speed driv ing mechanism with the shaft at a predetermined point in the rotation of the shaft. This feature insures greater certainty and reliability in the operation of the stopping devices and results in uniform conditions when the low speed mechanism is connected with the shaft so that the stopping devices will act uniformly during each operation thereof.

The invention also comprises various other novel and improved features set forth in the following description and particularly pointed out in the claims, the advantages secured. by which will be readil derstood and appreciated by those skilled in the art.

The invention as illustrated in'the present application is embodied in a driving and stopping mechanism designed to be applied to an automatic shoe machine such as that'illustrated and described in applicants pending application, Ser. No. 160,751, filed April 9, 1917, of which the presentap plication constitutes a division. It is to'be understood, however, that the invention is not limited in its application to any particular class or type of machines but that it maybe applied with advantage to various machines;

. In the drawings Figure 1 is a view-in vertical section of a machine embodying the invention, the section being taken substantially on line 11 of Fig. 3; Fig. 2 is a. view in horizontal section, taken substantially on the line 22 of Fig. 3; Fig. 3 is a view in front elevation, partly broken away and partly in section; Fig. 4 is a detail view in front elevation illustrating certain parts of the stopping mechanism; Fig. 5 is a plan view of the mechanism illustrated in Fig. 4; Fig. 6 is a detail view in rear elevation illustratingcertain parts of the stopping mechanism; Fig. 7 is a sectional View taken 'substantially on the line 77 of Fig. 6; Fig. 8 is a detail view in front elevation, partly in section, illustrating certain parts of the stopping mechanism; Fig. 9 is a sectional view taken substantially on the line 99 of Fig. 8, and Figs. 10 and '11 are detail sectional views inside and front elevation illustrating particularly the lock bolt car-" rier and the cooperating cam actuated arm of the stopping mechanism. 7 a

The driving mechanism illustrated in the drawing comprises a driving shaft 6- upon which is fixed a disk 8 carrying a driving member 10 of a friction clutch. The driven member 12 of the clutch is carried by a flange extending outwardly from a sleeve 14 loosely mounted upon the driving shaft 6. The sleeve 14 also carries a spiral gear 16 meshing with a spirallgear 18 formed on a sleeve 20 that is mounted on the driven shaft 22 to rotate therewith. While the members 10 and 12 of the mainfriction driving lUU through the spiral gears 16 and 18 at a speed depending upon the speedof the driving shaft 6. In stopping the rotation of the shaft 22 the members 10 and 12 of the main driving clutch are disengaged and the shaft '22 isstopped'through the action of automatically acting devices. The mechanism for stopping the shaft comprises a slowspeed friction clutch which is thrown into operation automatically upon the disengagement of the maindriving clutch and then acts first as a frictionbralre to slow down. the speed of the shaft 22 to the speed of the driving member of the clutch, andthen to drive the shaft 22 in a forward direction at slow'speed to stopping position. W'henthe shaft 22 arrives at stopping position therotation of the shaft is arrested-by a friction brake.

To enable the members of th-e main driving clutch to be engaged-and disengaged. the sleeve 14' which carries'tl'ie'driven memberof the clutch'is arranged-to slide longitudinally-of the shaft 6 upon which it is mounted. *Thespiral gearalfi is'formed with QtCYllllClIlCill IQCGSS, as shown in Fig. 1, the upper face of whichis engaged by a ball thrust bearing 24 interposed between said face-'and the upper end of a sleeve '26 forming abearingfor one end ofthe shaft 6. The sleeve "26 is'mou nted in a bearing on the frame to slide longitudinally of the shaft and the upper end of the s-leeve 26 is formed with a flange 28 which-is adapted to an inwardly projecting flange30 on a-collar 32 threa'dedinto the recess'in' the spiral gear 16. The sleeve '26 is "moved upwardly by the operator upon starting the machine to actuatethe-sleeve l l 'toengage the inemb-rs of the maindriving clutch, and is automatically moved downwardly upon stopping the machine, During the downward movement ofthe sleeve-26, the flange 28 'on'the sleeve engages the'l'iange 8O on'the collar 32, and movesthe sleeve 14c downwardly to disengage 'the members of 'the'main driving clutch.

The collar 32 provides an adpistable con nection'between the sleeve 26 and the sleeve 14. To enable the collar to be turnedreadily to adjust the same inthe recess in-the spiral gear ltl, the collar is formed with a-series of openings 3 lin which may be inserted any suitable tool'for turning the collar. The collar, when adjusted, is'held in adjustcd position by means of a pin 36 mounted in j the spiral gear, the lower end of which is "ad'apte'dto engage in any one of a series of recesses 38in the collar. The pin is acted upon by a spring 40 attached to the spiral gear and bearing upon the-head of the pin, which holds the lower end of the pin-in engagement with the recess in the collar. I

The mechanism by which the sleeve 26 is actuated to cause the engagement and di enga gcment of the main driving clutch,

comprises a disk 42 carried at one end of, and preferably formed: integral with a sleeve 44 mounted in a-bea-ring 4:6 in the frame of the machine, said disk having a series of teeth 48 meshing with a series of teeth 5O formed on the exterior of the sleeve26fi'To the opposite end'of the sleeve't l is clamped an arm 52 to the outer end ofwhicl is connected, bynmeans of a stud 5a, a hollow cylinder 56. Through this cylinder passes a rod 58-pivota-llyconnected atone end by a stud60v to the arm 62 of a lever 64 keyed to one end of a shaft 66 mounted to turn in the sleeve 44L. Surrounding"therod 58 within the cylinder 56 is a doiled spring-68 which at its lower end engages the 'loweren'd wall ofv the cylinder-andat its upper end acts against a collar 70 held by a stop nut T2 upon'the rod,- the 'collar'be'ing arranged to slide in the upper'end of the cylinder. Th s sprin g furnishes a I yielding connection between the arm 52 and'the lever 64. Upon the opposite end. of the shaft 6'8 is mounted a lock-bolt carrier 'i' l formed with a' dovetailed guide in which is mounted adore tailed slide 76.: The slide is yieldingly held in elevated position in thecarrier T l by a coiled spring 78 attached at its upper end to a pin 80 secured'inthe carrier and at its lower end to a pin 82 secured'm the slide. Projecting forwardly from the slide 7'6 IS a stud 84 carrying a. roll 86 which engages in an irregularly shaped slot 88 formed in a bracket 90 securedto the: frame of the machine. This roll also engages in an irregu- 'larly shaped slot 92 'formed'in an pivoted upon a stud 9'6 projectingfrom a lever 98. The lever 98 is provided with a pivot stud or shaft-100 mounted inlbearings in the frame'of the machine, and is normally held in elevated position by means at a coiledspring 1O2 attached at its lower end to a pin projecting from a stud 104 formed integral with the lever 98, and at'its upper end to a pin 106mo-unted on the frameof themachine. The'lever '98 is provided with an operating arm 108 terminating in a handle. In starting the machine, the op-- erator seizes the handle of the operating arm 1'08 and swings the lever 98 downwardly from the position shown in Fig. 3 to that shown 'in Fig. 4. The arm' 94L, through its engagement with the roll 86, depresses the roll and the slide 6 upon which it is carried, the roll moving downwardly through theslot 88 in the bracket 90, which acts as a guide for the roll. The

lower end of the carrier 74 will thus be swung to the left, Figs. 3 and 4, in starting the machine, and through the connection between the carrier and the disk 42 the dish will be turned in a'direction to elevate the sleeve 26 to engage'the members of the main driving clutch. hen the sleeve 26 has been elevated by the movement of the carrier sufficiently to engage the members of the clutch, the spring 68 will yield during the 'continuedmovement of the carrier, and the members of the clutch will be held yieldingly in engagement through the action of the spring. In order to retainthe members of the main driving clutch in engagement until the sewing of the shoe is completed, a latch is fixed to a stud 112 mounted to turn in a bearing in the lower end of the carrier 74, and is arranged to be engaged with the end of a holding catch 114 fixed to a stud 116 mounted to turn in a bearing in the frame of the machine. The catch is held in acting position by means of a coiled spring 118. As the lower end of the carrier 74 is swung to the left upon starting the machine,

the acting end of the catch 114 snaps in front of the end of the latch 110 into position to hold the end-of the carrier from moving back to the right. WVhen the carrier is thus latched in position, the handle of the arm 108 is released by the operator, and the lever 98 is elevated by the act-ion of the spring 102 to its initial position. In stopping the rotation of the shaft 22 the latch 110 is thrown out of engagement with the catch 114, allowing the lower end of the carrier to be returned towards its right-hand position. As the carrier is released, the spring 78 elevates the slide 76, and through the engagement of the roll 86 with the edge of the slot 88, the lower end of the carrier is swung back to the right. By this movement'of the carrier the sleeve 26 is depressed. There is a certain amount of lostmotion between the sleeve 26 and the collar 32, and the movement of the sleeve, caused by the swinging movement of the carrier under the action of the coiled spring 78, is not suflicient to disengage the members of the main driving clutch, which are subsequently disengaged at a predetermined point in the rotation of the shaft 22 by mechanism hereinafter described. 1

The latch 110 may be thrown out of engagement with the catch 114 automatically to stop the shaft 22 during any rotation of the shaft upon the occurrence of a defect in the operation of the machine in which the driving and stopping mechanism is embodied or upon the completion of the operation performed by the machine or the latch may be disengaged from the catch manually at any time by a manipulation of the catch. I

The machine is provided with devices which act when the main driving clutch is disengaged to slow down the speed of the shaft 22, and to cause the shaft to. stop in a predetermined position. The mechanism for slowing down and finally stopping the shaft 22 of the machine comprises a slowspeed friction clutch which is disengaged While the machine is driven through the main driving clutch, and is engaged when the 'main driving clutch is disengaged. This slow-speed clutch when engaged first acts as a friction brake to slow down the speed of the shaft 22 to the speed of the driving member of the slow-speed clutch, and then as a drivingclutch to drive the shaft 22 forward to stopping position. The slow-speed clutch comprises driving and driven friction clutch members and 122, mounted on the shaft 22. The driving member 120 of the clutch is journaled upon a sleeve 124 secured by means of a. washer 126 and a bolt 128 to a reduced portion of the shaft 22 to. rotate with the shaft. The clutch member 120 is driven by means of a bevel gear 130 meshing with a bevel gear 132 I formedon the clutch member. The gear 130 is mounted upon the lower end of a sleeve 134 journaled upon a shaft 136 secured at its upper end in the frame. Mounted upon the upper endof the sleeve 134 is a gear 138 which meshes with a gear, 140 formed 'on the disk 8 which carries the driving member 10 of the main driving clutch. The gears 132 and 130, and 138 and 140, are so proportioned that the clutch member 120 is rotated at slow speed'as compared with the speed of rotation of the driving member of the main driving clutch. The driven clutch member 122 of the slow-speed clutch is secured to the sleeve 20 which is mounted upon the shaft 22 to rotate with the shaft, but is movable longitudinally of the shaft to carry the driven memberof the clutch into and out of engagement with the driving clutch member. The sleeve is secured to rotate with the shaft by means of a bolt 144- threaded into the sleeve, and engaging in a slot- 146 in a flange 148 on the sleeve 124. The clutch members are normally held out of engagement by means of a coiled spring 150 seated at one end in a recess in the flange 148 on the sleeve 124, and at its other end in a recess in the sleeve 20. The movement of the sleeve 20 under the action of the spring is limited by the engagement of the stop nut 152 mounted on the end ofthe bolt 144 with the flange 148.

The mechanism for controlling the engagement and disengagement of the slow-' speed clutch comprises a cam groove 154- formed in the sleeve 20, in which engages a cam roll 156 mounted on the upper end of an arm 158 secured to one end of a shaft 160 mounted to turn in a sleeve 162 engaging in a bearing 164 on the frame of the machine. During the' normal operation, or while the main driving clutch ofth-e machine is e gaged to drive the machine, the arm 158 is oscillated idly by the cam groove 154 and cam roll 156. When the main driving clutch is disengaged, the carrier 74 is locked to'the arm 158 by means ofv a locking bolt consist-- ing of a projection 166 formed on the upper end of'the slide 76,"which is adapted to engage in a recess 168 formed in a lateral projection'17O on the arm158. hen the main driving clutch is engaged, the slide 7 6 then "being'held in lowered position, the projection' 'l66 is disengaged from the recess 168. VVhenthe latch 110 is disengaged from the "catch 114 and the slide '16 iselevated by the action of the coiled spring 7 8, as the arm-158 "reaches acertain point in its oscillating movement, the locking projection 166 envgages in the recess 168 to lock the lock-bolt car'rier'i l' to the arm. Thelower'end of the carrier is ad-apted to be engaged by a springpressed plunger 172 mounted to slide in a suitable guideway in the bracket 90. The plunger is attached to one end of a rod 17 1, and is actedupon by "a coiled spring 176 surrounding the rod 174i and interposed between the plunger and one end of the guide- Way in which the plunger is mounted. The movement of the plunger under the action of the coiled spring1 76'is limited by the engagem-ent with the" end of the bracket 90 of 1 a stop nut 1'? 8 threaded on the end of the rod, lVhen'the carrier 74E is released, the slide 7 6 rises and the lower end of the carrier swings to the right under the influence of: the spring 7 8, until, before the roll '86 reaches the upper end of the slot 88 the swinging movement of the carrier is yield- "ingly limited by its engagement with the plunger 172, the roll finally resting'in a recess 180 with which the slot is formed. The upward movement of the slide 76 projects the locking bolt 166 into engagement with the recess 168 in the'arm 158 to lock the carrieri'M to said arm. Fig. 8 shows substantially the positions of the parts thus'far described at this point'in the stopping operation., The locking projection 166 on the slide 76 engages in the-recess 168m the pro jection 170 onthe arm 158 to lock the arm to the carrier 7e when the cam roll 156 is located in the right-hand idle portion of the cam groove 154:,as shown in Fig. 3. The continued rotation of the sleeve 20 brings the inclined portionof the cam groove 154 leading from the right-hand idle portion'or" the groove to the leithand idle portion of 'the groove into engagement with the roll "156. Through the cooperative'action of the cam roll and the-cam groove during the en- 'gagement'of the roll in this inclined portion of the cam groove, the sleeve 20 is shifted longitudinally of the shaft 22 to the right, Fig. 2,-to engage the memher's'of the slowspeed clutch, and the carrier 74: is swung on its axis in a direction'to carry the lower end thereof farther'to the right from the position shown in Fig. 3. By this movement of the carrier'the sleeve'26 is depressed to dis engage the members of the main driving clutch. The disengagement of the members of the'main clutch and the engagement of the members of thes'lo'w-speed clutch are thus effected at a predetermined point in the rotation'of the drivenshait 22. This movement of the carrier occurs aga'instthe tension exerted by the spring 17 6 on the plunger 172', and after the cam'roll'lea'ves the inclined portion ofthe camgr'oo'v'e, and is engaged in the right-hand idle portio'n thereof, the members of'the slow-speed clutch are held in engagement with a-pre ss'ure depending on the tension of this spring. After the members of the slow-speed clutch are enerative action (it the cam'groove 154: and the cam roll 156, the carrier 74 is fir'st swung in a direction to carry th-e'lower end thereof to the left, after which the sleeve 20 is moved longitudinally ot'the-shaft 22 'to the left to disengage the driven member of the slowspeed clutch "from the driving clutch'member.

The swinging movement ofthe carrier 7 4 thus produced actuates'the devicesfor engaging the brake: The brake-actuating devices comprise'alever 182 mounted onone end of or formed integral with the sleeve 1'62 andcarrying a latch arm 184 secured to a stud 186 mounted in the left arm'of the lever,'sa-id latch arm being arranged to engage the left side of a projection 188 on a pin 190 projecting "forwardly from the slide 76. The stud 186 is actedupon by a spring 192 which tends to swingthe'latch arm 184 rea'rwardly into position to be engaged by the pin 190. During the'n'orm'al operation of the machine, or whilethe slide 76is held in lowered position, the pin 190 is locatedbelow the latch arm 184i. As-the slide 76 rises under the'in'i'luence of the coiled spring 78, upon'therelease'of the carrier 74,-to stop the machine, the lower end of the carrier '74 does not swing to the right farenough to carry the pm 190 beyond the end-of :the latch arm'184, but the pin rises behind the latch arm and engages an inclined face'194 formed on the rear side ofthe end of the arm. Asthe lower end of the carrier is swung farther -to' the right innnediately; after the engagement 'of'the members of the slow-speed clutchfthe movement ofthe carrier carriesthe projection 188 on the pin 190 beyond the end of the arm 184, an'd the arm is then swung rearwardly into position to engage the left side of the projection.

en the lower end of the carrier .74 is swung back to the left, just before the disengagement of the slow-speed clutch, the lever 182 is swung to theleft with the carrier through the engagement of the projection 188 with the end of the latch arm 184. This movement of the lever 182 effects the setting of the brake. The central portion or hub of the arm 184 is provided with an abutment face 196 for engagement with an arm 198 carried by a .brake actuating ring 200 surrounding the shaft 22. The ring is pivoted upon an eccentric pin 202, and is formed with oppositely projecting lugs 204 which engage in recesses'206 in a brake disk 208 carried by a sleeve 210 mounted onthe shaft 22 to slide longitudinally of the shaft but held from rotation with the shaft. The brake disk and the sleeve are held from rotation with the shaft 22 by the engagement of the lugs 204 on the ring 200 in the recesses 206 in the brake disk. The brake disk 208 is provided with a facing of friction material 216 for engagement with a brake surface 218 formed on a'disk 220 mounted on the shaft 22. The sleeve 210 is acted upon by a leaf spring 222 interposed between one end of a bearing 224 and a ring or collar 226 threaded upon the end of the sleeve, which spring 222 normally holds the sleeve in position with the brake disk 208 out of engagement with the disk 220. As the lever 182 is swung to the left by the movement of the carrier 74, the abutmerit face 196 on the latch arm 184 engages the arm 198 on the brake-actuating ring 200, and turns said ring about the eccentric pin 202 upon which itis pivoted, thereby causing the ring to move the brake disk 208 into engagement with the brake surface 218 of the disk 220 to arrest the rotation of the shaft 22. By the adjustment ofthe eccentric pin 202 upon which the brake-actuating ring is pivoted, the position of said ring may be regulated so as to produce the required action between the members of the brake to stop the rotation of the shaft 22 quickly and,

efficiently at the predetermined point in the rotation of the shaft.

The operation of the various parts of the mechanism illustrated in the drawings has been indicated in the preceding description but may be briefly, summarized as follows Starting with the parts in the position illustrated in Fig. '3, inwhich the shaft 22 and sleeve 20 are at rest, a depression of the handle 108 moves the arm 94 downwardly and through its engagement with the roll 86 of the lock bolt carrier slide depresses the slide and swings the lock bolt carrier into the position illustrated in Fig. 4. The

downward movement of the lock bolt slideremoves the pin 190 on the slide from engagement with the latch arm 184 and thus .sition illustrated in Fig. 4 by releases the brake disk 208 from engagement 0 with the disk 220 on the shaft 22. Theswinging movement of the lock boltcarrier rotates'the disk 42 so asto elevate the sleeve 1 wvise direction until its lower end engages This movement of the the plunger 172. lock bolt carrier is not sufficient to disengage the members of the main driving clutch. While the machine is running the arm 158 is beingoscillated idly by the timing cam groove 154. After the lock bolt slideis raised by the spring? 8, the lockbolt is engaged by the arm 158 and during the continued oscillation of the arm the lock, bolt carrier is swung still furtherin a counter clockwise direction so as to disengage the main driving clutch members. v Continued rotation of the sleeve 20 carrying thetiming cam groove 154 causes the sleeve to be forced toward the right, as indicated in Fig.

speed clutch. The slow speed clutch acts as a drag until the speed of the shaft 22 isreduced to that of the driving member of the slow speed clutch. Continued revolution of the sleeve 20 brings the shaft 22 to stopping thereby engaging the members of the slovs; v

position, at which point in the revolution c the sleeve 20 is moved to the left, as viewed 7 in Fig. 3', to release the members of the slow I speed clutch and the lock bolt carrier is swung slightly in a clockwise direction to apply the brake through the engagement of "the pin 190 with the latch arm 184.

The nature and object of the invention having thus been explained, and a mechanism embodying the invention in its preferred form having been described, what is claimed is:

1. A driving and stopping mechanism having, in combination, a shaft, high and. low speed driving mechanisms therefor, and means for-disconnecting the high speed driving mechanism from the shaft and for connecting the low speed driving mechanism with the shaft at a predetermined point in disconnecting the low speed driving mechanismfrom the shaft. 7 V

2. A driving and stopping mechanism having, in combination, a shaft, high and low speed driving mechanisms therefor, and means arranged to operate during any rotation of the shaft for disconnecting the high the rotation of the shaft and for thereafter speed driving mechanism frqmthe zshaft. and for connecting the low speed driving mecha: nism, with, the; shaft at a predetermined point in therotation. of the shaft, andfor disconnecting the low speed driving. mechanism fromthe shaft at another predetermined point in the rotation of the shaft 3. A driving and stopping mecha nism having, in combination, a shaft, high and low speed driving mechanis ms' therefor, means arranged to operate dur ng. any; rotation of' the shaft for disconnecting the high speed driving, mechanism from the shaft and for connecting the low speed driving mocha,- nis m with thev shaft, at

predetermined point in ;the rotation of'fthe shaft and for thereafter disconnecting, the low speed drivingvmeohanism from the. shaft, and means for stopping the shaft ata predetermined point in its rotary movementWhenthe 10W speed'driving mechanism has been disconn sted h e rom 4-. A driving and-stopping meehanism having, in combination, a shaft, high and low speed driving mechanismstherefor, and means actuated through, the high speed riv ng mechani m Wh ethe s af is c nnectedtherevvith for disconnecting theshaft from the high speeddriving mechanism and connecting thegshaft .'With the low speed driving. mechanism.

5. A driving and stopping. mechanism having, combination, a shaft, high and low speed (driving mechanism therefor, means actuated by the driven mechanism for disconnecting the high speed driving mechanism fromtlie shaft and means for connecting the low speed, driving mechanism there- With.. i

6; A driving, and stopping mechanism having, combination, .a. shaft, high and low speed driving mechanism therefor, and

, thereof, a driven clutch member mounted on the sleeve, a sleeve fixed toithe second shaft. andslidable longitudinally thereof,

gearing connecting the'sleeves, a slow-speed driving clutch comprisinga driving olutch.

member loose onthesecondjshaft, a driven clutch member lIlQ'HIItQCl on, the second e, peed-reducing searing. c ecting thedrivlng, shaft, Withthe slow-speed. driv ing clutch member, means for movingfthe.

. fir t sl evete n es w nsas th l1ish1.=- speed driving clutch, andmeans for mov ng the secondsleeve to =,e11gage the: slow-speed clutch upon the disengagement ofthe high speed clutchand to disengage-the slow-speedflfl clutch.

8. A driving and: stopping mechanism v.

having in combination, a driving shaft, a dr ven. shaft arranged transversely to -the dr1v1ng;shaft,.a high-speed drlving clutch fondriving the driven shaft from the driis ing, shaft comp-rising a driving, clutch memberfived to the driving shaft, a sleeve loose mounted, on. thejsleeve, a sleeye fi'XGCl to the driven shaft and slidable longitudinally.

on the driving shaft and sliclableilongitudi1,-

nally ,thereof, a ,driven; clutch member. 89;

,; thereof, gearing connecting-the sleeves, a

slow-speeddriving clutch comprising a drive,

second; sleeve, speed-reducing gearing con,- necting the driving. shaft W1th .th e. slowspeed. dr ving-clutch member,;means.nnder [control ofthe operatorfor moving theofirst,

ingelutchmember loose on thesecond shaft, 5' a ,driven clutch. member. mounted on the,

- sleeve to en age the high-speed driving clutch to startfthe machine, and means o-per ated through the high-speed clutch for moving thafirstsleeve to disengage the high speed clutch and for moving the second sleeve .to engage theslow-speed clutch upon thefldisengagement of the, high-speed clutch V and operated ,through the. slow speed clutch v to disengage the slow speed .cltitc 9. A driving and stoppingv mechanism having, in combination, a. driven shaft, a highspeed- .friction. driving, clutch. for driv- -ing theshaftcomprising driving and driven.

cluteh, members, one of which is mounted, for movement to engage and disengage thei clutch, a slow-speed friction. driv-' ing clutch comprising drivinghand;driven 4 clutch, members, an j axially movable sleegve upon which thodriven member of the slow peed l tch-is mounted, .nie ns for, moving the -s lee3ve to engage and disengage the SlOW speed clutch comprising a cam carriedby the sleeve, a lever normally oscillated idly by the 0am, a movable-'lock-bolt carrier, means acting on the carrier to resist move. ment of the carrier in one direction, a lock bolt movably mounted in the carrier for locking the carrier to the lever to cause axial movements of the sleeve to engage and dis:

.engage the ;slowspeed clutch, means for.

actuating the'lock boltto lock the carrier. to i andv nnlock v it from the lever, and meq lls :for actuat ng the axially movable member.v

of theghigh speed clutch to engageand dis7 engage. t e h gh speed clutch from the movements of the locksbolt carrier.

10. A driving and stopping. mechanism high speed friction driving clutch for ,driving the shaft. comprising driving and driven having, in combination, ,a driven shaft,,a

clntc'n members, one of which is mounted for axial movement to engage and disengage the clutch, a slow-speed friction driving clutch comprising driving and driven clutch members, an axially movable sleeve upon which the driven member of the slow speed clutch is mounted, means for moving the sleeve to engage and disengage the slowspeed clutch comprising a cam carried by the sleeve, a lever normally oscillated idly by the cam, a pivoted lock-bolt carrier, means acting on the carrier to resist movement of the carrier in one direction, a lock bolt movably mounted in the carrier for locking the carrier to the lever to cause axial movements of the sleeve to engage and disengage the slow speed clutch, means for swinging the carrier and projecting and withdrawing the lock bolt to lock the carrier to and unlock it from the lever, and connections for actuating the axially movable member of the high speed clutch to engage and disengage the high speed clutch from the swinging movements of the lock-bolt carrier.

11. A machine having, in combination, a high-speed driving clutch, a slow-speed driving clutch, means for engaging and dis engaging the high-speed clutch, means for engaging the slow-speed clutch when the] high-speed clutch is thrown out, and for disengaging the slow-speed clutch when the shaft reaches stopping position, comprising a sleeve upon which the movable member of the slow speed clutch is mounted, a cam carried by the sleeve, a lever normally oscillated idly by the cam, a movable lock-bolt carrier, a lock bolt movably mounted in the carrier for locking the carrier to the lever to cause the engagement and disengagement of the clutch, a brake, and connections between the lock-bolt carrier and the brake for engaging the brake from the movement of the carrier as the slow-speed clutch is disengaged.

12. A driving and stopping mechanism having, in combination, a shaft, a clutch for driving the shaft, a sleeve fixed to the shaft and longitudinally movable thereon and carrying the driven member of the clutch, means for controlling the engagement of the clutch comprising a cam carried by the sleeve, a lever normally oscillated idly by the cam, a pivoted lock bolt carrier, a lock bolt slidably mounted in the carrier to lock the carrier to the lever and thereby effect longitudinal movement of the sleeve on the shaft, and means for controlhng the pos1- tion of the lock bolt.

13. A driving and stopping mechanism having, in combination, a shaft, a clutch for driving the shaft, a sleeve fixed to the shaft and longitudinally movable thereon and carrying the driven member of the clutch, means for controlling the engagement of the clutch comprising a cam carried by the sleeve, a lever normally oscillated idly by the cam, a pivoted lock bolt carrier, a lock bolt slidably mounted in the carrier to lock the carrier to the lever and thereby effect longitudinal movement of the sleeve on the shaft, means for controlling the position of the lock bolt, a brake, and means actuated by the movement of the lock bolt carrier for engaging the brake.

let. A driving and stopping mechanism having, in combination, a shaft, a clutch for driving the shaft, a sleeve fixed to the shaft and longitudinally movable thereon and carrying the driven member of the clutch, means for controlling the engagement of the clutch comprising a cam carried by the sleeve, a lever normally oscillated idly by the cam, a lock bolt carrier, a lock bolt slidably mounted in theicarrier to lock the carrier to the lever and thereby effect longitudinal movement of the sleeve on the shaft, means for controlling the position of the lock bolt, a brake independent of the sleeve, and means for engaging the brake comprising a latch arranged to be moved into operating position during the movement of the carrier in one direction and'to be actuated from the carrier during its return movement.

15. A driving and stopping mechanism having, in combination, a shaft, driving mechanism for the shaft, means for controlling the connection of the driving mecha' nism with the shaft comprising a cam, a

' member normally oscillated idly by the cam,

a normally stationary member, a coupling device for connecting said members to render the clutch controlling means active,'a brake and means for engaging the brake comprising a latch arranged to be moved into operating position during the movement of the latter member in one direction and to be actuated from the latter member during its return movement.

LAURENCE E. TOPHAM.

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